I'd like to join!

Ah, je comprends! Merci!

Out of the two, ''informatie zoeken over iets'' would be the best meaning. However, if you want ''iemand over iets informeren'' you should drop the ''zich'' and replace it with someone's name, so ''IEMAND van iets op de hoogte stellen''. It's because ''zich'' is a reflexive pronoun. Anyway, I think ''zich van iets op de hoogte stellen'' isn't really used. You usually use it to inform someone else, so ''iemand van iets op de hoogte stellen'' would sound more normal to me.

Tae Kim's guide to Japanese grammar (http://www.guidetojapanese.org/learn/grammar/verbparticles) is a very good site, so I recommend you to check it out!: 'The primary difference between the 「に」 and 「へ」 particle is that 「に」 goes to a target as the final, intended destination (both physical or abstract). The 「へ」 particle, on the other hand, is used to express the fact that one is setting out towards the direction of the target. As a result, it is only used with directional motion verbs. It also does not guarantee whether the target is the final intended destination, only that one is heading towards that direction. In other words, the 「に」 particle sticks to the destination while the 「へ」 particle is fuzzy about where one is ultimately headed. For example, if we choose to replace 「に」 with 「へ」 in the first three examples of the previous section, the nuance changes slightly.' Examples: ボブは日本へ行った。 Bob headed TOWARDS Japan. 友達は、来年に日本に行く。 Friend will go to Japan next year. So basically, I would use 「へ」 when you're heading towards somewhere, and「に」when you go to a target as the final.